Stone



No. 623,373. Patented A r. l8; I899.

A. JEROME.-

GBANK AXLE FOB CYCLES.

I (Applicgtion filed Nov. 19, 1898.) (No Model.) 2 SheetsSheet l.

No. 623,373. Patented Apr. I8, I899. A. JEROME.

CRANK AXLE FDR CYCLES.

(Application filed Nov. 19, 1898.) I

2 Sheets-Sheet 2.

(No Model.)

Nrrnn STATES PATENT GFFICE.

ANTHONY JEROME, OF CHICAGO, ILLINOIS, ASSIGNOR TO THE A. FEATHER- STONE & COMPANY, OF SAME PLACE.

CRAN K-AXLE FOR CYCLES.

SPECIFICATION forming part of Letters Patent No. 623,373, dated April 18, 1899.

Application filed November 19, 1898. Serial No. 696,905. (No model.)

To aZZ whom, it may concern: of the axle, and said sections are formed with Be it known that I, ANTHONY JEROME, a usual screw-threaded enlargements for the citizen of the United States, residing at Chireception of the ball-bearing cones and 6, cago, in the countyof Cook and State of lllilock-nut 7 for the adjustable cone 5, and at- 5 5 nois, have invented certain new and useful taching collar or disk 8 for the sprocket or Improvements in Crank Axles for Cycles; driving wheel. One of said sections is formed and I do hereby declare the following to be a with a square or other non-circular extension full, clear, and exact description of the same, 9, that is made tapering, and a reducedcylinreference being had to the accompanying drical extension 10 at its extreme end, that 1o drawings, forming a part of this specification. is screw-threaded, as shown. The other axle- The present invention relates to that type section is formed with a counterpart square of crank-axles for bicycles in which the axle or other non-circular socket 11,,that is also portion is formed in sections that are telemade with a counterpart taper to that of the scoped together in a manner to prevent indeextension 9. The above-described extension 15 pendent rotation of either section and which 9 and socket 11 are formed on the adjacent are held to their engagement by a tubular ends of the axle-sections, respectively, and screw-threaded connecting sleeve or nut. are adapted to engage together to hold the The object of the present improvement is said axle-sections against independent rotato provide asimple, convenient, and effective tion with relation to each other, as usual in 20 means for separating the sections of such type the present type of crank-axles.

of crank-axles when it is desired to discon- 12 is a cylindrical bore forming a continuanect the same from the frame of the bicycle tion of the non-circular socket 11 and extendfor the purpose of repair and the like. ing to the outer end of the crank-section, as

A further object of the present improveshown.

25 ment is to provide a simple and effective con- 13 is a counter-bore at the outer end of the struction and arrangement of parts by which bore 12, that forms a bearing or abutment a fastening of the parts is effected in a ready for the circular head ll of the cylindrical atand substantial manner, as will hereinafter taching-nut 15, that screws upon the screwmore fully appear, and be more particularly threaded extension 10 of the other cranko pointed out in the claim. section to fasten the two sections together' I attain such objects by the construction against longitudinal disengagement.

and formation of parts illustrated in the 210- The head 14 of the attaching-nut 15 is companying drawings, in which formed with the usual non-circular recess 16 Figure l'is an enlarged longitudinal secfor engagement with the operating wrench or 5 tional elevation at line 56 x, Fig. 2, of a crankkey 17, by which it is turned.

axle embodying the present improvements; In the present invention the cylindrical Fig. 2, an enlarged detail transverse section bore 12 is formed with a screw-thread 18 for at line at :0, Fig. 1; Fig. 3, an enlarged pen more or less of its length, .as shown in Figs. spective View of the connecting-sleeve de- 1 and 4, and which in the operation of effect- 4o tached; Fig. 4., an enlarged detail longitudiing a disengagement of the crank-sections nal sectional elevation illustrating the means and after the attaching-nut 15 is removed for detaching the axle-sections Fig. 5, an ensuch screw-threaded portion 18 is engaged by larged elevation of the key or wrench for the screw-threaded portion or enlargement effecting a fastening or unfastening of the 19 of the wrench or key 17, so that by the 45 parts; Fig. 6, an enlarged detail end view of continual rotation of such key the inner end the same. thereof will contact with the end of the screw- Similar numerals of reference indicate like threaded extension 10 of the opposite axleparts in the several views. section to force the same in a positive man- Referring to the drawings, 1 and 2 reprener from its engagement, as illustrated in I00 50 sent the usual crank-arms, usually formed Fig. 4 of the drawings.

integral with-the respective sections 3 and 4 Having thus fully described my said 1nvention, What I claim as new, and desire to secure by Letters Patent, i s

In a crank-axle for cycles the combination of two interlocking axle-sections, one of which is formed witha tapering non-circular extension and a screw-threaded cylindrical exten- I and a wrench having a screw-threaded shank that engages said screw-threads of the cylindricalbore, the end of which shank is adapted to abut against the end of the screw-threaded extension of the opposite axle-section, to force the parts asunder, when the headed cylindrical holding-nut is removed, substantially as set forth.

In testimony whereof Witness my hand this 15th day of November, 1898.

ANTHONY JEROME.

In presence of- ROBERT BURNS, JAMES LAVALLIN. 

